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Tytuł:
Generation of mesoscale cyclonic eddies in the Baltic Sea with inflow events
Autorzy:
Zhurbas, V.
Oh, I. S.
Paka, V.
Powiązania:
https://bibliotekanauki.pl/articles/972852.pdf
Data publikacji:
2001
Wydawca:
Instytut Morski w Gdańsku
Tematy:
inflow
wind
Opis:
A sigma-coordinate ocean model, by Blumberg and Mellor (POM). is applied to study the formation processes of mesoscale cyclones observed in the Baltic Sea, following the inflow events. The initial conditions simulate a situation when the Arkona and Bomholm Basins (or Arkona Basin solely) are already filled with the inflow water of the North Sea origin. while the rest of the sea still contains the old water of pre-inflow stratification. The model runs with constant and time dependent northerly/easterly wind, changing the buoyancy forcing, grid geometry and bottom topography, display the following. Entering the East Gotland Basin from the Slupsk Furrow. the bottom intrusion of saline inflow water splits in two: one goes northeast towards the Gotland Deep and the second moves southeast towards the Gulf of Gdansk. An intensive mesoscale cyclonic eddy carrying the inflow water is generated just east of the Slupsk Furrow with the inflow pulse. A number of smaller cyclones, with boluses of the inflow water, form in the intermediate layer along the saline intrusion pathway to the Gotland Deep. A similar cyclonic eddy is generated in the Bomholm Basin with the inflow pulse from the Arkona Basin. Following Spall and Price [19}, the cyclones are expected to form by the geostrophic adjustment of high potential vorticity inflow water column to a low potential vorticity environment. Some evidence for the PV outflow/inflow hypothesis is obtained in a numerical experiment, with a virtual dam restricting water exchange between the Bomholm and Gotland Basins to the limits of the Słupsk Furrow.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 35-48
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generation of mesoscale cyclonic eddies in the Baltic Sea with inflow events
Autorzy:
Zhurbas, V.
Oh, I. S.
Paka, V.
Powiązania:
https://bibliotekanauki.pl/articles/1920569.pdf
Data publikacji:
2000
Wydawca:
Instytut Morski w Gdańsku
Tematy:
inflow
wind
Opis:
A sigma-coordinate ocean model, by Blumberg and Mellor (POM). is applied to study the formation processes of mesoscale cyclones observed in the Baltic Sea, following the inflow events. The initial conditions simulate a situation when the Arkona and Bomholm Basins (or Arkona Basin solely) are already filled with the inflow water of the North Sea origin. while the rest of the sea still contains the old water of pre-inflow stratification. The model runs with constant and time dependent northerly/easterly wind, changing the buoyancy forcing, grid geometry and bottom topography, display the following. Entering the East Gotland Basin from the Slupsk Furrow. the bottom intrusion of saline inflow water splits in two: one goes northeast towards the Gotland Deep and the second moves southeast towards the Gulf of Gdansk. An intensive mesoscale cyclonic eddy carrying the inflow water is generated just east of the Slupsk Furrow with the inflow pulse. A number of smaller cyclones, with boluses of the inflow water, form in the intermediate layer along the saline intrusion pathway to the Gotland Deep. A similar cyclonic eddy is generated in the Bomholm Basin with the inflow pulse from the Arkona Basin. Following Spall and Price [19}, the cyclones are expected to form by the geostrophic adjustment of high potential vorticity inflow water column to a low potential vorticity environment. Some evidence for the PV outflow/inflow hypothesis is obtained in a numerical experiment, with a virtual dam restricting water exchange between the Bomholm and Gotland Basins to the limits of the Słupsk Furrow.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 35-48
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The major Baltic inflow in January 2003 and preconditioning by smaller inflows in summer-autumn 2002: a model study
Autorzy:
Meier, H.E.M.
Doscher, R.
Broman, B.
Piechura, J.
Powiązania:
https://bibliotekanauki.pl/articles/48684.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
climate variability
numerical modelling
bottom boundary layer
Baltic Sea
major inflow
Baltic inflow
Opis:
Using the results of the Rossby Centre Ocean model (RCO) the Baltic inflows in summer/autumn 2002 and January 2003 have been studied. The model results were extracted from a long simulation with observed atmospheric forcing starting in May 1980. In RCO a bottom boundary layer model was embedded. Both the smaller inflows and the major inflow in January 2003 are simulated in good agreement with observations. We found that a total of 222 km3 water entered the Baltic in January; the salinity of 94 km3 was greater than 17 PSU. In August/September 2002 the outflow through the Sound and inflow across the Darss Sill were simulated. The net inflow volume amounted to about 50 km3.
Źródło:
Oceanologia; 2004, 46, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of water consumption in 2014-2017 in Toruń
Autorzy:
Piasecki, A.
Górski, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/101171.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
water consumption
inflow per inhabitant
meteorological conditions
Opis:
This work analyses the variability of water consumption in Toruń over the years 2014-2017. The difference between the largest annual water consumption (2016) and the smallest (2014) was 13.2%. Higher consumption values typically occurred in the warm half-year, except in 2015. The lowest values occurred in the winter months (February), and the highest in the summer months (from June to August). The largest dayto-day variations in water abstraction were recorded at Easter and Christmas. There were differences between the average water consumption on particular days of the week, with the largest differences being between Saturdays (the highest value) and Sundays (the lowest value). Average unit water consumption was in the range of 58.2 to 67.3 dm3·M-1·d-1. On the basis of multiple regression analysis, a set of the factors with the greatest impact on the daily variability of water consumption in the city (in the warm half-year) was indicated. These factors include: evaporation, day of the week, humidity and maximum temperature.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2018, IV/1; 973-984
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
From the region attracting to the region pushing out the population (on the example of the Silesian voivodeship)
Od regionu przyciągającego do regionu wypychającego ludność (na przykładzie województwa śląskiego)
Autorzy:
Rakowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/2082871.pdf
Data publikacji:
2022
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
inflow
outflow
net migration
migration efficiency
Silesian Voivodeship
Opis:
Subject and purpose of work: The subject of the research is the Silesian Voivodeship, identified with the region which, almost until the end of the 20th century, was characterized by a positive balance of population migration in interregional flows. Since 1999, it has become a runoff area. The aim of the article is to present the size of the links in terms of permanent migration of the Silesian region population with other voivodeships and the resulting demographic losses that this region has suffered over 20 years. Materials and methods: The research method is reduced to the analysis of data on the migration of people to and from the Silesian region in 1999-2018 with the use of statistical methods. The basic source of data that formed the basis for the analysis of inter-voivodeship population flows were the numbers included in the Demographic Yearbooks 2000-2019. Results: The demographic processes taking place over 20 years caused a decrease in the region’s population by 251,934, of which 60,956 were inter-voivodeship flows, 97,059 for a negative increase, 93,919 for a negative foreign balance. Conclusions: From the analysis of population flows between the Silesian region and the rest of the country, the following correlations can be seen: − in the analyzed period of research, the attractiveness of settlement in the Silesian region decreased, − the Silesian region showed the strongest migration ties with its immediate surroundings, which would be in line with Ravenstein’s law, − the ties between the population of the Silesian region and voivodeships with a higher level of development, especially in the outflow, are tightening, and it is weakening with underdeveloped regions, − the migration efficiency of the population of the Silesia region was the lower, the higher level of development was represented by a given group of voivodeships.
Źródło:
Economic and Regional Studies; 2022, 15, 2; 131-157
2083-3725
2451-182X
Pojawia się w:
Economic and Regional Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Artificial neural networks in forecasting tourists’ flow, an intelligent technique to help the economic development of tourism in Albania.
Autorzy:
Gjylapi, Dezdemona
Durmishi, Veronika
Powiązania:
https://bibliotekanauki.pl/articles/1036374.pdf
Data publikacji:
2014
Wydawca:
Academicus. International Scientific Journal publishing house
Tematy:
tourist inflow
tourism economy
neural networks
neuro-genetic
bpnn
Opis:
Tourism plays an important role in many economies and contributes greatly to the Gross Domestic Product. In the past eight years, the number of tourist arrivals in Albania has increased rapidly, which resulted in increasing the number of tourist nights and revenue from tourism. Tourism also provides new sources of income for the country, without having that local citizen to pay more taxes. This can be achieved by income from parking, tourist taxes, leased apartments, sales information, etc. Early prediction on the tourist inflow mainly focuses on econometric models that have as a main feature the tourism demand being predicted by analysing factors that affect the tourists’ inflow. This approach results in being difficult, time-consuming and also expensive to determine econometric models. Traditional time series methods, such as exponential smoothing method, grey prediction method, linear regression method, ARIMA method etc., are more appropriate for the prediction of the tourist inflow. However, since they don’t apply a learning process on sample data, it is difficult for them to realize complicated and non-linear prediction on tourist inflow. The aim of this paper is to present the neural network usage in the tourists’ number forecasting and to determine the trends of the future tourist inflow, thus helping tourism management agencies in making scientific based financial decisions.
Źródło:
Academicus International Scientific Journal; 2014, 10; 202-211
2079-3715
2309-1088
Pojawia się w:
Academicus International Scientific Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of Service Characteristics of Two Town’s WWTP
Autorzy:
Jurik, L.
Kaletova, T.
Sedmakova, M.
Balazova, P.
Cervenanska, A.
Powiązania:
https://bibliotekanauki.pl/articles/125312.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
wastewater
wastewater treatment plant
pollutants
inflow
dry weather flow
Opis:
The study presents variation of wastewater inflow and its components during a year. We considered a situation with and without precipitation. Two renovated wastewater treatment plants were selected to analyse the available parameters and relation between them. Both wastewater treatment plants served to treat domestic and industrial wastewater with similar characteristics. One of them is only for the town purposes; second one serves for the surrounding villages. The relation between the concentration of pollutants and a flow of wastewater is very low. The correlation and a coefficient of the determination between pollutants were over 0.5.
Źródło:
Journal of Ecological Engineering; 2017, 18, 3; 61-67
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obszary napływu Polaków do Niemiec po rozszerzeniu Unii Europejskiej w 2004 r.
Autorzy:
Stryjakiewicz, Tadeusz
Sosiński, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2021522.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
migrations
population inflow areas
Polska
Germany
Nauki Humanistyczne i Społeczne
Źródło:
Studia komitetu przestrzennego zagospodarowania kraju PAN; 2018, 183; 345-354
0079-3507
Pojawia się w:
Studia komitetu przestrzennego zagospodarowania kraju PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface modifications for inflow cannulas of ventricular assist devices – comparison of latest solutions
Autorzy:
Kurtyka, Przemysław
Kustosz, Roman
Kaczmarek, Marcin
Gonsior, Małgorzata
Tokarska, Klaudia
Powiązania:
https://bibliotekanauki.pl/articles/283866.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
surface modification
VAD inflow cannula
tissue-implant interface
porous surface
Opis:
Nowadays, the Mechanical Circulatory Support (MCS) within the Ventricular Assist Devices (VAD) appears to be a reliable and effective solution for patients with advanced heart failure (HF). After many years of work, extracorporeal pulsatile VADs have been replaced by new generations of implantable continuous flow (CF) pumps. Clinical experience has shown that present-day pump constructions still need to be improved to minimize the risk of complications during heart assistance. One of the complications is the pump inflow obstruction caused by the ingrowth of tissue into the blood inflow path and pump thrombosis. The main goal is to develop a coating for the external surface of the inflow cannula to provide controlled tissue ingrowth. The smooth surface of the cannula external wall results in the tissue overgrowth into the pump inflow orifice, and may be a source of emboli. The paper presents external surface modifications of the inflow cannula performed by different VAD manufacturers within the topography characterization. The inflow cannulas used in CF VADs are mainly made of titanium alloy due to its mechanical properties and high biocompatibility. In general, the discussed surface coatings were characterized by the roughness of about ≈ Ra = 15 μm, high porosity and good wettability Φ ≈ 60°. The surface was covered with titanium microspheres or titanium mesh. The developed surfaces and clinical experience confirm the ability to control the tissue ingrowth along the external surfaces of the inflow cannula at the tissue-implant interface.
Źródło:
Engineering of Biomaterials; 2019, 22, 151; 17-23
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inflow waters in the deep regions of the Southern Baltic Sea - transport and transformations
Autorzy:
Piechura, J.
Beszczynska-Moller, A.
Powiązania:
https://bibliotekanauki.pl/articles/47562.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
transport
temperature
deep region
transformation
Baltic Sea
inflow water
mixing
Opis:
A medium-sized inflow (about 200 km3 according to IOW data, - personal communication) of saline water into the southern Baltic Sea occurred during January 2003. Unlike any previously observed inflow, this one brought very cold water, of temperatures around 1-2oC and less. Since the temperature of the deep water in the southern Baltic before the inflow was exceptionally high (11-12oC), the inflowing waters produced dramatic changes and a steep temperature gradient. The movement of the inflowing waters through the deep basins and channels of the Baltic Sea from the Arkona Basin to the Gdańsk Deep during next 4-8 months is described. Frequent mesoscale structures and intensive mixing followed the eastward transport of the inflow water, particularly in the Bornholm Deep and Słupsk Furrow. The present paper is based on data collected during 6 cruises r/v "Oceania" between December 2002 and August 2003. The last cruise in August took place in order to assess the long-term consequences of the inflow.
Źródło:
Oceanologia; 2004, 46, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Criteria used in the LFS to identify the population’s economic activity status vs. the respondents’ subjective views: implications for unemployment research
Kryteria identyfikacji stanu aktywności ekonomicznej ludności stosowane w badaniach BAEL versus subiektywna ocena respondentów – implikacje dla badań bezrobocia
Autorzy:
Kołodziejczak, Włodzimierz
Powiązania:
https://bibliotekanauki.pl/articles/424789.pdf
Data publikacji:
2018
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
Labour Force Survey (LFS)
unemployment
economic activity
inflow/outflow analysis
Opis:
In the Labour Force Survey (LFS) the interviewees are considered as employed, unemployed or professionally inactive based on “objective” criteria defined in the survey’s methodological assumptions (e.g. the fact that a person is seeking employment, waiting to start work or worked at least one hour in the reference week). In use since 1992, the above approach allows the classification to be unaffected by the respondents’ subjective feelings. Since 2006, LFS respondents have been also allowed to identify their economic activity status by themselves. The objective of this paper is to indicate and attempt to explain the differences between the results based on the identification of economic activity statuses as per the criteria adopted by the Central Statistical Office and the LFS respondents’ own assessment of their economic activity status. This paper assessed the rationale behind each approach and the implications thereof for the procedure and results of unemployment surveys from a static and dynamic perspective.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2018, 22, 3; 99-113
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ODTWARZANIE BARIER MIGRACYJNYCH W WARUNKACH KRYZYSU EKONOMICZNEGO
THE REESTABLISHMENT OF MIGRATION BARRIERS IN THE CONDITIONS OF AN ECONOMIC CRISIS
Autorzy:
Smolarkiewicz, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/579835.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
IMMIGRANTS
MIGRATION INFLOW
INCOMING SOCIETY
EXCLUSION
ECONOMIC AND CULTURAL SECURITY
Opis:
The article concentrates on the consequences of the economic crisis from the perspective of immigrants and the host country’s policy. An economic slump directly translates not only into a decrease in the size of the inflow of immigrants, but also into a change in the way they function in the host country. To a considerable extent it deepens the state of immigrants’ exclusion, in accordance with the concept of M. Foucault, in four overlapping dimensions embracing the economic, social-cultural, and political sphere. In the sphere of socio-political activities it also leads to the reestablishment of schemes based on the dichotomy “us vs. them (strangers)”. According to the political tactics of “dangerization” (see Bauman) this induces the treatment of immigrants in the categories of threat to economic and cultural security. A constant, increasing growth and visible presence of the immigrant population in socio-cultural space and, simultaneously, their limited tendency to integrate constitute a challenge for immigration policy.
Źródło:
Studia Migracyjne - Przegląd Polonijny; 2014, 40, 2(152); 131-150
2081-4488
2544-4972
Pojawia się w:
Studia Migracyjne - Przegląd Polonijny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Warm waters of summer 2002 in the deep Baltic Proper
Autorzy:
Feistel, R.
Nausch, G.
Mohrholz, V.
Lysiak-Pastuszak, E.
Seifert, T.
Matthaus, W.
Kruger, S.
Hansen, I.S.
Powiązania:
https://bibliotekanauki.pl/articles/47540.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
temperature
hydrography
inflow
warm water
summer
salinity
Baltic Sea
oxygen condition
Opis:
From October 2002 until March 2003 surprisingly warm, oxygenated waters were frequently encountered in the Baltic Sea in the area between the Bornholm and Fårö Deeps from the halocline down to the bottom. Owing to their ventilation effect in the stagnating deep waters, their occasional observations have partly been incorrectly attributed to the inflow events of October 2002 or January 2003. The emergence of some of these waters can be traced back to the exceptional summer weather conditions in August and September 2002 in central Europe. The warm waters played a remarkable renewal pacemaker role for the subsequent important winter inflow of January 2003. The evolution of this summer inflow is described and possible causes are discussed.
Źródło:
Oceanologia; 2003, 45, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Does inflow of water river shape the nutrient content of lake sediments?
Autorzy:
Potasznik, A.
Szymczyk, S.
Powiązania:
https://bibliotekanauki.pl/articles/961384.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
lake
bottom sediment
river-lake system
inflow
nutrient content
lake sediment
Opis:
This study evaluated the influence of the Symsarna River on the spatial distribution of organic matter, Kjeldahl nitrogen (NK) and total phosphorus in the surface layer of bottom sediments. The analyzed site was Symsar Lake in the Olsztyn Lakeland (north-eastern Poland) and the inflows. The results of this study indicate that the lake’s morphology and inflowing streams were largely responsible for the variations in the nutrient content of bottom deposits in the flow-through Symsar Lake. The NK content was significantly correlated with the lake’s depth, whereas TOC levels were determined mainly by the location in the lake. The surface layers of bottom sediments in Lake Symsar were characterized by an average organic matter content of 171.2 g kg-1 and near-neutral pH (6.78-7.77). The average contents of components in the analyzed sediments were determined at 62.01 gTOC kg-1 d.m., 6.08 gNK kg-1d.m. and 2.18 gTP kg-1d.m. Converted to fresh mass, the above contents expressed per square meter of the lake’s sediment reached 3.95 kgTOC m-2 f.m., 0.42 kgNK m-2 f.m. and 0.18 kgTP m-2 f.m. In turn, the average concentrations of components in sediments from the streams, likewise per square meter, equalled 12.4 gTOC m-2 d.m., 0.93 gNK m-2 d.m. and 0.9 gTP m-2 d.m. The highest contents of the analyzed components were observed in bottom sediments near the outflow of a river from the lake and in the lake’s region intersected by the river. The Symsarna River was responsible for the transport of and variability in the deposition of mineral fractions, and for the nutrient accumulation in the surface layer of bottom sediments. A flow-through water body in a river-lake system can contribute to retention in periods when it exerts a negative impact on the trophic status of a lake. From a broader, ecological viewpoint, it can inhibit the transport of pollutants outside the catchment.
Źródło:
Journal of Elementology; 2016, 21, 2
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Foreign direct investment in ukrainian economy. Effects of foreign direct investment involvment
Autorzy:
Maslak, O. O.
Satalkina, L. O.
Powiązania:
https://bibliotekanauki.pl/articles/410775.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
foreign direct investment
effects of foreign direct investment
foreign direct investment inflow
Opis:
Clarified: the term “Foreign direct investment”, and the situation with foreign direct investment in the economy of Ukraine. Researched and briefed: The positive and negative effects of foreign direct investments for the economy of host countries and for the economy of Ukraine as the host country. Emphasized: The importance of the right policy in the field of foreign direct investment attraction, for the increasing of their positive effects.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2012, 1, 4; 29-33
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł

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